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Polyolefin production with different diluents in multiple polymerization reactors

a polymerization reactor and polymerization technology, applied in chemical/physical/physical-chemical stationary reactors, chemical/physical/physical-chemical processes, chemistry apparatuses and processes, etc., can solve the problem that the polymerization process may not employ a separate diluen

Active Publication Date: 2014-09-18
CHEVRON PHILLIPS CHEMICAL CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention relates to a polyolefin reactor system that can produce different polyolefins using different diluents. The system includes multiple reactors and a separator to process the polymerization process. The technical effect of the invention is the ability to produce different polyolefins using different diluents, which can improve the properties and performance of the polymers.

Problems solved by technology

However, some polymerization processes may not employ a separate diluent, such as in the case of selected examples of polypropylene production where the propylene monomer itself acts as the diluent.

Method used

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  • Polyolefin production with different diluents in multiple polymerization reactors
  • Polyolefin production with different diluents in multiple polymerization reactors
  • Polyolefin production with different diluents in multiple polymerization reactors

Examples

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embodiment a

[0128]A polyolefin reactor system comprising: a first reactor configured to produce a first reactor discharge stream comprising a first polyolefin and a first diluent composition; and a second reactor configured to receive at least a portion of the first reactor discharge stream and to produce a second reactor discharge stream comprising a second polyolefin and a second diluent composition, wherein the second diluent composition is different than the first diluent composition.

embodiment b

[0129]The polyolefin reactor system of embodiment A, wherein the first diluent composition and the second diluent composition comprise a different Hildebrand solubility parameter value.

embodiment c

[0130]The polyolefin reactor system of embodiments A through B, wherein the first diluent composition and second diluent composition comprise a different boiling point.

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Abstract

A system and method for producing polyolefin, including a polyolefin reactor system having: a first reactor to produce a first reactor discharge stream having a first polyolefin and a first diluent; and a second reactor to receive at least a portion of the first reactor discharge stream and to produce a second reactor discharge stream having a second polyolefin and a second diluent, wherein the second diluent is different than the first diluent.

Description

BACKGROUND[0001]1. Field of the Invention[0002]The present invention relates generally to polyolefin production with multiple polymerization reactors and, more particularly, to employing different diluents in respective polymerization reactors in polyolefin production with multiple polymerization reactors to facilitate production of different polyolefin in the respective polymerization reactors.[0003]2. Description of the Related Art[0004]This section is intended to introduce the reader to aspects of art that may be related to aspects of the present invention, which are described and / or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present invention. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art.[0005]As chemical and petrochemical technologies have advanced, the products of thes...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08F2/01B01J19/00
CPCB01J19/00C08F2/01B01J19/1818B01J19/1837B01J2204/005C08F210/16C08F2/001C08F2/14C08F210/14C08F2500/01C08F2500/05C08F2500/08C08F2500/26C08F2500/02C08F2500/07C08F110/02
Inventor BHANDARKAR, MARUTIBENHAM, ELIZABETH A.GONZALES, REBECCA A.KUFELD, SCOTT E.MUTCHLER, JOEL A.GILL, CATHERINE M.NGUYEN, THANH T.ODI, TIMOTHY O.
Owner CHEVRON PHILLIPS CHEMICAL CO LP